For quite some time now (at least since JRMC21) I've been stuck with references to old MC libraries which no longer exist on my computer. The references appear in the "Playing Now" pane; see attached screen shot oldLibraries.jpg. In this case "BOGUS PonoWorld Library", and "old Main Library MC*" (where * is 20, 21, and 22) do not exist on the local file system. MC knew about them long ago; I can't figure a way to convince MC to forget about them.
If I go to File > Library Manager and hit "Delete Library...", that brings up a list of libraries to delete, but the missing ones are disabled (greyed out) so I can't select them. See attached screen shot CantDelete.jpg.
If I click on one of the missing libraries in Playing Now, I only get three options: Load, Rename, and Clone. No Delete button.
Does anyone know way to delete the references to these old, nonexistent libraries?
MC 24.0.25, macOS 10.13.4.